# Counties in Tennessee by population under 18, 2025

All 95 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_0_17_share`
- Unit: %
- Definition: Residents aged 0 to 17 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.
- Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (https://www.census.gov/programs-surveys/popest/data/data-sets.html)
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/population-under-18/tennessee-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Montgomery County | 25.8 |
| 2 | Williamson County | 24.5 |
| 3 | Macon County | 24.5 |
| 4 | Shelby County | 24.4 |
| 5 | Bedford County | 24.4 |
| 6 | Lawrence County | 24.2 |
| 7 | Rutherford County | 24.2 |
| 8 | Dyer County | 23.6 |
| 9 | Gibson County | 23.4 |
| 10 | Hamblen County | 23.2 |
| 11 | Robertson County | 23.1 |
| 12 | Wilson County | 23.1 |
| 13 | Scott County | 23.1 |
| 14 | Tipton County | 23 |
| 15 | Crockett County | 23 |
| 16 | Marshall County | 22.9 |
| 17 | Coffee County | 22.7 |
| 18 | Smith County | 22.5 |
| 19 | Warren County | 22.3 |
| 20 | Sumner County | 22.2 |
| 21 | Madison County | 22.1 |
| 22 | Maury County | 22 |
| 23 | Perry County | 22 |
| 24 | Chester County | 21.9 |
| 25 | Lewis County | 21.9 |
| 26 | Henderson County | 21.8 |
| 27 | Dickson County | 21.8 |
| 28 | Lincoln County | 21.7 |
| 29 | DeKalb County | 21.5 |
| 30 | Bradley County | 21.4 |
| 31 | Obion County | 21.4 |
| 32 | McMinn County | 21.4 |
| 33 | Grundy County | 21.2 |
| 34 | Cannon County | 21.2 |
| 35 | Carroll County | 21.1 |
| 36 | White County | 21 |
| 37 | Union County | 21 |
| 38 | McNairy County | 21 |
| 39 | Van Buren County | 21 |
| 40 | Haywood County | 20.9 |
| 41 | Lauderdale County | 20.8 |
| 42 | Hamilton County | 20.8 |
| 43 | Hickman County | 20.7 |
| 44 | Rhea County | 20.7 |
| 45 | Humphreys County | 20.7 |
| 46 | Stewart County | 20.6 |
| 47 | Putnam County | 20.6 |
| 48 | Overton County | 20.6 |
| 49 | Anderson County | 20.5 |
| 50 | Houston County | 20.5 |
| 51 | Cheatham County | 20.5 |
| 52 | Knox County | 20.5 |
| 53 | Sevier County | 20.4 |
| 54 | Campbell County | 20.2 |
| 55 | Hancock County | 20.1 |
| 56 | Meigs County | 20.1 |
| 57 | Fentress County | 20 |
| 58 | Giles County | 19.9 |
| 59 | Davidson County | 19.9 |
| 60 | Monroe County | 19.9 |
| 61 | Hardin County | 19.7 |
| 62 | Morgan County | 19.7 |
| 63 | Cocke County | 19.6 |
| 64 | Decatur County | 19.6 |
| 65 | Henry County | 19.6 |
| 66 | Blount County | 19.5 |
| 67 | Marion County | 19.4 |
| 68 | Benton County | 19.4 |
| 69 | Sequatchie County | 19.3 |
| 70 | Jefferson County | 19.2 |
| 71 | Moore County | 19.1 |
| 72 | Weakley County | 19.1 |
| 73 | Franklin County | 19.1 |
| 74 | Grainger County | 19 |
| 75 | Clay County | 19 |
| 76 | Roane County | 18.9 |
| 77 | Claiborne County | 18.8 |
| 78 | Sullivan County | 18.7 |
| 79 | Hawkins County | 18.6 |
| 80 | Trousdale County | 18.6 |
| 81 | Hardeman County | 18.5 |
| 82 | Jackson County | 18.4 |
| 83 | Greene County | 18.3 |
| 84 | Loudon County | 18.1 |
| 85 | Polk County | 17.9 |
| 86 | Washington County | 17.7 |
| 87 | Pickett County | 17.6 |
| 88 | Fayette County | 17.2 |
| 89 | Wayne County | 17.1 |
| 90 | Carter County | 17.1 |
| 91 | Unicoi County | 16.8 |
| 92 | Cumberland County | 16.6 |
| 93 | Lake County | 16.5 |
| 94 | Bledsoe County | 16.3 |
| 95 | Johnson County | 16 |